I called in a contractor to replace my tub because its broken. He said that he has to move my wall back 9 inches and break up my cement floor and move pipes etc... That does not sound right to me if my tub is really 58 inches why would he have to move it back so far. I know that the tub is not 58 because some of it is behind the dry wall just need a second voice to see if I should get a different contractor. Please Help.